Review on Meric Communication Miniature Schnauzer Chihuahua by Pamela Moore

Overall the design is definitely good. My 3 month old border collie puppy learned to use it to ask to be let outside in less than 3 days. The main issue I have is that it doesn't have rubber feet or anything to keep it in place when the dog calls. As a result, my dog shoves him everywhere until he's completely across the room. A minor issue I had is that the button the dog has to press to ring the bell is quite small. Sometimes my dog just hits the bell and I have to force him to hit it again until it rings. Other than those 2 issues it's perfect and I'll keep using the 4 of them I bought unless they somehow break. which seems unlikely given how simple and robust they appear.